.box2{
    width: 1000px;
    height: 300px;
    position: relative;
    overflow: hidden;
    margin: 50px auto;
    background-color: white;
    cursor: pointer;
}
.container{
    width: 5000px;
    height: 300px;
    position: absolute;
    left: 0;
    top: 0;
}
.container img{
    width: 400px;
    height: 300px;
    float:left;
}